Because of air pollution being greatly reduce...

Because of air pollution being greatly reduced, this city is still ______.

高三英语单项填空中等难度题查看答案及解析

Nowadays ________ certain limit should be set on ________ use of cars to reduce air pollution.

A. /; the                           B. a; the                                C. the; /             D. the; the

高三英语单项填空简单题查看答案及解析

Nowadays ________ certain limit should be set on ________ use of cars to reduce air pollution.

A．/; the            B．a; the             C．the; /             D．the; the

高三英语单项填空中等难度题查看答案及解析

— I can’t bear the air pollution in this city anymore. It is getting worse and worse.

— ________! We’ve never had so many chemical factories before.

A. I wouldn’t bet on it　 B. You said it

C. Keep it up　　 　　　　　　 D. Come off it

高三英语单项填空中等难度题查看答案及解析

— I can’t bear the air pollution in this city anymore．It is getting worse and worse．
— ________！We’ve never had so many chemical factories before．
A． I wouldn’t bet on it　　　　 B． You said it

C． Keep it up　　　　 　　　　　　　 D． Come off it

高三英语单项填空中等难度题查看答案及解析

— I can’t bear the air pollution in this city anymore．It is getting worse and worse．

— ________！We’ve never had so many chemical factories before．

A．I wouldn’t bet on it

B．You said it

C．Keep it up

D．Come off it

高三英语单项填空中等难度题查看答案及解析

— I can’t bear the air pollution in this city anymore．It is getting worse and worse．

— ________！We’ve never had so many chemical factories before．

A． I wouldn’t bet on it 　　 B． You said it

C． Keep it up 　　　　　　　　　　 D． Come off it

高三英语单项填空中等难度题查看答案及解析

Air pollution is one of the hottest topics at present because poor air quality is an important factor in both the incidence and cause of respiratory(呼吸道) diseases.

Zhong Nanshan, a deputy to the NPC and a member of the CAE, said recently when the concentration of PM2.5 rises by 10 micrograms per cubic meter, hospitalization may rise by as much as 3.1 percent. Meanwhile, when the concentration of PM2.5 rises from 25 mgs per cubic meter to 200, the average daily death rate may rise to 11 percent.

Zhi Xiuyi, a leading expert in lung cancer treatment and also vice-president of the CATS, said medical authorities used to focus on tobacco control as a primary means of preventing lung cancer. "But in fact, air pollution is no less harmful than smoking and our research team released a report earlier this year showing that the cancer rate in Beijing is closely related to industrialization," he said.

The report, conducted by the Beijing Institute of Cancer Research, shows that the number of cancer patients in China has increased markedly during the past ten years. Chaoyang District, the city's main area of industrialization, has the highest incidence of cancer, almost double that of Yanqing, an area on the outskirts of the city. About four out of 1000 Chaoyang residents have some form of the disease, with lung cancer at the top of the list.

"The risk of having cancer largely depends on the length of exposure and the concentration of noxious gases(有毒气体的浓度)," said Zhi. In response to the doubt whether seven years' exposure to poor air quality will almost result in cancer, Zhi said the time scale was taken from research overseas that suggested the rate of incidence generally peaked in the seventh year of exposure to a heavily polluted environment.

1. What is the passage mainly about?

A. Medical researches on environment.

B. The disadvantages in big cities.

C. The only reason for the lung cancer.

D. Poor air quality contributing to lung cancer.

2.What can you conclude from the 3rd paragraph?

A. Compared with smoking, air pollution is more harmful.

B. Air pollution is as harmful as smoking.

C. It is very important to prevent people from smoking.

D. People realize the importance of keeping healthy.

3.If there were 3,000,000 people in Chaoyang District, how many would have respiratory diseases?

A. 16000　　　　 B. 12000　　　　 C. 8000　　　　　 D. 7500

4.What can you infer from the passage?

A. Industrialization has its weakness as well as strengths.

B. The average death rate rises with different ages and places.

C. The air in Beijing is much more polluted than that in the other cities.

D. The more heavily-polluted air you breathe in, the sooner you’ll have cancer.

高三英语阅读理解中等难度题查看答案及解析

What way are you thinking of ______rid of the air pollution in our capital city?

高三英语单项填空简单题查看答案及解析

Vitamin B could help reduce the effects of the dangerous type of air pollution, according to a new study published on Monday. In the first study of its kind, a team of international researchers looked into the damage caused by one of the pollutants that have the severest impact on health—PM2.5.

They found that Vitamin B supplement could effectively reduce the impact of the tiny particles （颗粒）on the human body, although they stressed that the research was in its early stages. According to the WHO, 92% of the world's people are living in places where the PM2.5 level goes beyond the recommended level. So it’s urgent to find a solution to the problem.

According to this study, published in the PNAS, 10 volunteers were initially exposed to clean air and given a placebo (安慰剂）to check their baseline responses. The group then kept on taking placebos tor tour weeks before being exposed to heavily polluted air from downtown Toronto, where an estimated 1,000 cars passed every hour. The bad air was delivered to the volunteers through an "oxygen type" face mask. The experiment was then repeated, with each volunteer taking a Vitamin B supplement daily, made up of 2.5mg of folic acid, 50mg of Vitamin B6, and l mg of Vitamin B12.

Vitamin B6 can be found in liver, chicken, nuts and other things, and Vitamin B12 in fish, meat, eggs, milk and some cereals. The researchers found that four weeks of Vitamin B supplements — the damage of PM2.5 effects by 28-76%. The results emphasized how prevention at an individual level could be used to fight against the damage of PM2.5, the researchers said.

1.What's the newly discovered effect of Vitamin B in Paragraph 1?

A. It can be used to replace other vitamins in our daily life.

B. It can help lower the air pollution level in the open air.

C. It can reduce the impact of PM2.5 on human bodies.

D. It can get rid of the pollutants remaining in our body.

2.What can be learned from the second paragraph?

A. Further study about the effect of Vitamin B needs to be done.

B. Vitamin B is the most important to human's health.

C. The tiny particles in the air are made up of PM2.5.

D. 92% of the world's people are affected by PM2.5.

3.How did researchers draw the new conclusion about Vitamin B?

A. By referring to a journal.　　 B. By performing experiments.

C. By interviewing scientists.　　 D. By comparing vitamins.

4.You may read the passage on a website about　　 　　　　 .

A. environment　　 B. medicine

C. education　　 D. health

高三英语阅读理解中等难度题查看答案及解析